Mechanical movement



g- 1930- CCHRISTIANSEN 1,772,243

MECHANICAL MOVEMENT Fil ed May 5, 1927 s Sheets-Sheet 1 Aug. 5, 1,930. c. CHRISTIANSEN MECHANICAL MOVEMENT Filed May 5, 1927 m IT N E v N I s- 1930. c. CHRISTIANSEN 1,772,243

MECHANICAL MOVEMENT Filed May 5, 1927 3 Sheets-Sheet '3 .IIN VEZ N+D l KW fimw WMM-KLDL Patented Aug. 5, 1930 UNITED STATES (PATENT OFFICES CHRISTIAN CHRISTIANSEN, OF LYNN, MASSACHUSETTS, ASSIGNOR TO ROTARY MA-' CHINE COMPANY, OF LYNN MASSACHUSETTS, A CORPORATION OF, MASSACHU- SETTS MECHANICAL MOVEMENT y I My present invention relates to mechanical movements and more particularly for mechanisms for giving to' a shaft or shafts driven from a constantly rotating-source of power, a rotary movement, the speed of which can be controlled by the operator It is the aim of my invention to provide a simple device embodying means for accomplishing theseresults. i

bodying my invention is'especially adapted for use in connection with small machines as, for example, certain'types of. shoe machines such as edge folders where rollers which do the folding rotate at greatly varying rates of speed. In operating such inachines, it is necessary to proceed slowly around a sharpbend or turn in the work and to proceed rapidly along the straight or substantially straight portions and it will be understood that there will be a great loss of time on the part of the operator if-the speed of the machine is not completely under his or her control so that it may be speeded up instantly when thestraighter portions are reached, and slowed down to any desired degree when the more diflicult portions are reached. I V

The deviceembodying my invention is simple and reliable and is positive in its action. Italsohas the advantage that the mechanism which controls the speed of the device also. "stops and starts it. which greatlyimproves the usefulness of the machine- While it is tobe understood that the mech anism'embodying my invention is applicable to many other types of machines, for the purpose of illustration, I have shown it as embodiedin a machine for applying adhesive tape or stay to parts of boots and shoes.

Referring to the drawings Fig.1 is a side elevation partly in section of a'machine embodying my invention;

Fig. 2is-an' end view of the rollers; Fig. 3is an end elevation of the machine as viewed from the right of Fig. 1 I Fig. 4 is asimilar view showing theparts 'inadifferentposition; I,

Fig.1 5 is a section taken on line 5*.5. of Fig.3;

Fig. 6'is certain ofthe associated parts; 1 e

' Fig. 7 1s a detail view in perspective of a detail view of the clutches and certain of the parts shown in Figs. 3 and 1;;

and

Figs. 8and 9 are diagrams illustrating the operation of the machine.

In Fig. 1, at A there is shown a vsuitable V I p frame or support for the working parts of While not limited thereto the device emtheinachine. B and B are :two work rolls WhlCll applythe tape to the boot or shoe being treated. The tape is designated C and the frame of the'machine. The lower'roll is mounted in a movable arm 14, itself mounted on a rockshaft 15 controlled by a treadle I 16, and the connection 17 by means of which the pressure of the roll B on the'worlcmay be regulated by. the operator, orthegroll separated to permit the'insertion or. removal of the work. These partsfare incidental to I the particular use to which my; invention is to be put and,,therefore, need not be described anyfurther'in detail. The shaft 12 onwhich the, lower work roll B is'mounted is connected to the shaft 18 by a propeller shaft 19 and universal joints 20 and 21 which permit the shaft 12 to be moved relatively to the shaft 18 without cramping or binding either part.

shaft18. These" pinions are such that if either pinion isturned'it willcause the other Theshaft 18parallel to the shaft 11 and 1ng with a corresponding pinion 231m the pinion and consequently the other shaft to I turn with it. Each of the gears 22 and2 3 is provided with a huba' intowhich extends a-hub b loose on the shaft and secured-'to'an arm. The arm'for the upper; shaftisfdesignat ed 24 and the arm for the lower shaft is designated 25. These arms are connected by a ,link or connecting member 27. The hub. 12 carries the cam surfaces of a roll or Horton Jul clutch, the rollers being designated 26 in Fig. 6. The clutches on the two shafts 11 and 18 are arranged to operate'in the reverse directions. Thus, when'the upper arm 24 moves in a counterclockwise direction as indicated in Fig. 6, the upper clutch on the shaft, 11 isengaged and the, gear 22' is caused to turn in the same direction by the arm'24,

On the contrary when the arm 25 moves in a.counterclockwise;direction, he lower clutch on thes hait-lfi is ;disengaged from theqpinion 2 3I It will be understood, however, that since the pinions are in mesh witlreaclrpther, the. upper p1n1on w1ll move whenever the lower pinion moves an claviceversa; T'heresult of this construction is, that, movement- 1 of the connecting member27 in either direction produces a *rotary movement of ,both p nionsin the same directlon. Thus, up- I lward movement of the connecting member 27 drives the pair of pinions through. the

upper clutch, While downward movement turns the pair of pinions inj'thesame direc 5 tion :through a the lower clutch.

r-The mechanism by 7* means of which the link 27 and consequently thetwo, armsQL and -25are movedwill nowbe'gdescribed. At 28 (seeFig-s'fi, 4 and 5) is shown a lever pivoted at 29to.th' e lower a rm'2 5. ';This lever has a laterallyextended portion 30, which is slotted as shown at 3 1- t o pe rmit it to swing in a vertical plane I about ;the pivot '29 without -collidi-ng with the lower shaft 18. ,At 32 is ofthe pivot 6 coincides with theaxis of the 7 shown a driving shaft of the machine pro .vided with a suitable belt pulley 'The finnerend-0f said drivingshaft 333s provided with an eccentric'pin 4 which asis'hown in Fig-.1 .is'iorkedand straddles theend of the lever 28. 'The' forked'eccentrie p'in t'isfree to rotate in the shaftBQ and,-the re fore, forms in effect a. crank which moves the end of the lever 28 up" and down as the shaft 32 revolves. At 35' (see also Fig.7) is shown ja buttonsl idably mounted upgn the lever/28 and pivoted at {5 to the arm 37, the upper end of which -s urrounds the upper shaft '11. The arm37 f may, therefore, be'swung about the shaft 11 thereby causing the button 35 to travel lengthwise ofthe lever 28, Thelbutlton fbeing fre'e to oscillate about thepivot .6, and to slide length-wise of the flever 28 forms a movable fulcrum for :the. said lever.

The movement of the button-toward the'right as shown in Figsjigand 5 is limited by a stop 38 on the 'leiier'armQSand when the button is in con-tact'with this stopfthe axis pivptn29gby which the "lever; 'arm' as. is con,

I'i'ected' be the clutch and 251 ,riigwiu, there;

fore,be seen that when the button 35 is. in this osition (see particularly Fig. it will cease to act as a f ulcrum' for the lever 28and consequently the arm 25 will mete oscillated by said lever: 0n the contrary, when the button 85 movedftothe left'a's"shown in Figs. 4 and 7 the lever 28 swings about the pivot 6 of the button as a fulcrum, this move ment being caused by the crank pin 4 as already described and consequently the right hand endof the lever 28 moves the right hand end of the arm 25 up and down an amount ,determinedibythe position of the button 35 on the arm 28. It will be understood that the farther the button 35 is moved i to thezleft. the greater .xwi ll he the stroke of iatheclutcharm 25since' thelength o'fthe portion of the lever 28 lying at the fighter the 'zfnlcrumfio. will be proportionally increased thereby, and the portion of the lever which crum larm -3Tand the otherarm e ofQthe' bell crank is c onnectedrto 'atreadlermfbyia co'nnection 4L1. v.,The movable ifulcrumlarm 37 isnormally held againstthe' stop 38 byfmeans ofa spring-42. a

Theoperation'of these parts be clearly understood by reference to the "diagrams forniingFigs'S and 9 o f (the drawings. Tn these diagrams'the parts 'are'in'dicated bythe same numbers as inthe preceding figures" but lines d' epive bysmail ci les F jth'ese it W'illbe seenthat when the parts amin :1 the position shown iin'Fig. 8 thei llllcljjllllj arm 37'i'sf atithe-extreme right andthe axis of the button3 5 coincides wit'htlie ax' is 'oj f the (pivot 29 by means ofwhich the lever arrn 28 is cona nect'ed ,to the lower clutch f arm [25 and rotation of the crank 4E willrimpart an idle motion to the .leveri2'8 but this motion will jnolt be transmitted to the lower 'clutch'a rm,25, At

FM t me ereio ei hew i a er machine ,willjstand still; When operator desires to vczuise' the work rollslBj'andfB Ito iotate he will depress the 'treadle This will swingthe movable fulcrum. arm .37 to the leftmovi'ng the 'button35'raway from-the stop as; Asthe bu to n'm ves t z eleftrthe eng or thepartofthelevei arm onath'e rig t t r of increases. Since the'lever 28 now ful- "crum'ed about the pivo-t- 6' as its Eleft hand end is moved up and down, the right hand end will be given a reciprocal movement in-the opposite directiom'tlie amount of said-movement being proportioned {to the relative length oi thetwo lever arms, Qonsequently V the amount of movement imparted toe-the andf18 will be proportioned tothe 1 position ofthegmovab'le fulcrum; sand the P riph r l Sp d Of t e r ller n e e a the movable fulcrum ishshifted toward the aleft as shown in F3, 4, .8 and it is desired'to stop the machine it is only neces the several membersareinldicated bysingle use sary to let up on the treadle 40 and permit the spring 42 to push the movable fulcrum arm 37 to the right against the stop 38.

Since the arc of movement imparted to the clutch lever arms at each rotation of the main shaft is very small and since the main shaft is ordinarily designed to run at relatively high speeds it is found in practice that the rotation of the two shafts is so steady that the intermittent movement is not perceptible in the operation of the machine. I find in practice that the mechanism described can be run at high speeds but is at all times under perfect control of the operator. It imparts to the two shafts a positive motion and since the drive is not through any friction clutch the machine is more reliable and more satisfactory in operation than would otherwise be the case.

It will be understood that the mechanical motion herein described is applicable not only to motions having two parallel shafts but also to machines having only one shaft. This will be readily understood if it be assumed that the shaft 18 is cut off between the gear 23 and the universal joint 21. In this case the shaft 11 will be driven by the mechanical motion exactly as before. Under these cir cumstances the mechanical motion is identical in construction and mode of operation but is employed to turn one shaft instead of two.

What I claim is:

1. The combination of a pair of pinions intermeshing to rotate in opposite directions, oppositely acting roll clutches for rotating said pinions, a pair of connected members for operating said clutches, a constantly rotating shaft, a lever device oscillated constantly from said shaft and connected to said mem bers to oscillate the same in unison and thereby operate the clutches in unison, saidlever device comprising a lever and a fulcrum movable independently on said lever for varying the oscillating stroke of said members and thereby the speed of rotation of the pinions, a spring for moving said fulcrum in one direction and a lever for moving the fulcrum in the opposite direction.

2. The combination of a shaft, a pinion on said shaft, a second pinion intermeshing therewith. oppositely acting one-way roll clutches for driving both of said pinions in opposite directions, common actuating means for both of said clutches including an oscillating leverdevice connected to said clutches, said lever device comprising a lever and a movable fulcrum to vary the stroke of said lever, spring means for shifting said fulcrum in one direction, and a treadle operated lever for shifting the fulcrum in the opposite direction.

In testimony whereof I afiix my signature.

CHRISTIAN GHRISTIANSEN. 

